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Finding the Fourth Proportional to 116,698.80, 174,902.40 and 85,497.60

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Solution

The fourth proportional to 116,698.80, 174,902.40 and 85,497.60 is: 128,139.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,698.80 : 174,902.40 = 85,497.60 : x
  2. Step 2: Convert to fraction form
    116,698.80/174,902.40 = 85,497.60/x
  3. Step 3: Cross multiply
    116,698.80x = 174,902.40 × 85,497.60
  4. Step 4: Simplify right side
    116,698.80x = 14,953,735,434.24
  5. Step 5: Solve for x
    x = 14,953,735,434.24/116,698.80
  6. Step 6: Final answer
    x = 128,139.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.